MGF Supported Tilbury Douglas and CT Construction Ltd on the installation of a new storm tank at Stockley Wastewater Treatment Works near Chesterfield. The project required a deep excavation to facilitate the construction of the new tank, forming an important part of the site’s infrastructure improvements.
With existing structures located close to the proposed excavation, a carefully designed support system was required to maintain ground stability and provide a safe working environment throughout the construction process, In addition, the temporary works design needed to align with the contractor’s preferred installation sequence to ensure efficient progress on site.
Stockley WWTW Storm Tank Excavation
MGF supported CT Construction LTD with a bespoke exacvation support solution that enabled the safe construction of a new storm tank, despite site restrictions.
MGF was engaged to provide the temporary works design and excavation support solution for the storm tank excavation. Working closely with the contractor, the team developed a bespoke arrangement that accommodated the site’s constraints while supporting the required construction methodology.
The solution incorporated KKD 600/8 lapped trench sheets, supported by 203 UC Tank Brace fames and 200 Series cross braces, providing a robust excavation support system capable of maintaining stability throughout the works. Particular attention was given to the proximity of existing structures and the sequencing of the installation process to ensure the excavation could be carried out safely and efficiently.
A key consideration during the design phase was the contractor’s installation method and the need to avoid clashes with framework operations. MGF tailored the temporary works arrangement to suit these requirements, ensuring the support system integrated seamlessly with the construction programme while maintaining safe access and working space within the excavation.
MGF delivered a bespoke excavation support solution that enabled the contractor to safely construct the new storm tank while working in close proximity to existing structures. By tailoring the design to suit the contractor’s installation sequence and framework requirements, MGF helped ensure the works progressed efficiently and wothout unnecessary disruption.
The project demonstrates MGF’s ability to develop practical temporary works solutions that combine safety, buildability and collaborative design, supporting contractors in delivering critical water infrastructure projects to programme.
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